Good product. I'm using it to heal tennis elbow and it is a big help. Make sure, however, you select the right tension for your intended use. For tennis elbow therapy you pre-twist the bar and then release the twist with your hurt arm. The blue bar is very stiff and challenging to twist. It would likely be painful for a moderate to severe case of tennis elbow. I suggest the red or green bar for tennis elbow. For strength building by bending the bar, the blue is challenging but fine. For reference I am a 48 year old male, 6'3", in good shape, who plays competitive tennis 5 times a week. I hope this is helpful.
Rating: [4 of 5 Stars!]